Pump or compressor valve



D. A. DECROW.

PUMP 0R COMPRESSOR VALVE.

APPLICATION FILED AUG-13. 1920.

Patented Mal". 7 1922.

' UNITED STATES PATENT oFFicE.

DAVID A. DEGBOW, OF NEW YORK, Y.,

ASSIGNOR '10 WORTHINGTON PUMP AND IAOEINIBY CORPORATION, OF NEW YORK, N.Y., A CORPORATION OF NEW YORK.

PUMP OR COMPRESSOR VALVE.

Specifications! Letters Patent.

Patented Mar. 7, 1922.

Application filed August 18, 1920. Serial No. 403,239.

To all whom it may concern:

Be it known that I, DAVID A. Dnonow, a citizen of the United States,residing at New York city, county of New York, and State of New York,have invented certain new and useful Improvements in Pump or CompressorValves, fully described and represented in the following specificationand the accompanying drawings, forming a part of the same.

This invention relates to valves of the spring-less type. v It is theespecial object of the present invention to provide a valve of thisclass which shall be simple in construction, durable, highly efficientin operation, and. particularly adapted for use in pumps for liquids,although valves of similar construction may be advantageously used incompressors, blowing englnes, andlike apparatus.

It is a further object of the-invention to provide a valve of the classdescribed which, when in normal or closed position, will be held undertension against its seat, and which when opened Wlll be pro erlysupported to prevent deformation oi the valve disk, the constructionalso providing means whereby the pressure fluid will be directed onlyagainstthe outer portion of the elastic valve disk, thus securing alarge flow area with small flexing of the outer portion of the disk andthus securing proper action and long life of the valve.

For a full understanding of the invention, a detailed description of aconstruction embodying the same in its preferred form will now be ivenin connection with the accompanying rawin forming a part of thisspecification, and t-e features fOIIlr ing the invention thenspecifically pointed out in the claims.

In the drawings- Figure 1 is a central section of the valveconstruction, and

Figure 2 is a top lan view thereof.

As illustrated in tile accompanying draw-- in s, the valve constructionincludes a body 1 orming inlet and outlet ports and circular valve seat2, and a hub 3 centrally sup and of a thickness and quality best suitedopposite the valve, but preferably of"con-' cavo-convex form, as shown,between which and hub 3 the valve disk 5 is securely held by screw 7.

It will be observed that the valve seat 2 has its edge bevelled orrounded and that the-hub 3 is cone-shaped, with its apex toward theinlet, so that the fluid passes through the valve seat and past thevalve in substantially a single direction without sharp turns. With thisconstruction, the valve disk will at all times be held under tension onits seat when the valve is closed, due to the concave surface of the hub3 being slightly lower than the circular valve seat 2. The pumped fluidwill be guided by the cone shaped hub to exert pressure on the valvedisk near its peri hery and aproximatelyitangentially to t e valve,therey securing a uniform and easy opening of the valve and flow of thefluid, while the abutment 6, due to its cone shape, will permit fullopening of the valve and at the same time prevent its opening so far asto weaken or deform the flexible disk.

What I claim is:

1. A valve for pumps and the like, comprising a valve body forming inletand outlet ports and a circular valve seat, a cone shaped hub with itsapex toward the flow of liquid and its valve supporting surface below"the level of the circular'valve seat, an elastic valve disk positionedon said hub and adapted to be held under tension on said seat, and anabutment for said valve.

2. A valve for pumps and the like, comprising a valve body forming inletand outlet ports and a circular valve seat, a hub and supportin armstherefor, said hub having its valve isk supporting surface below thecircular valve seat and its opposite end cone shaped to direct the fluidagainst the outer portion of the disk, a rubber disk valve su he (1under tension on the valve seat, and a convex abutment for the valvedisk, the whole-bein held together by a single screw centrally 0% thevalve and abutment.

3. A valve for pumps and the like, comp-ported on said hub and adaptedto be 2 v p j v 1,408,724

prising a valve body forming inlet and outletnports and a circular valveseat, a hub having its supportin surface below the circular valve seat,an an elastic valve disk supported on said hub and held under tension onthe valve seat, said ports being arranged to direct the flow outward andnear the outer edge of the valve disk.

4. A valve for pumps and the like, comprising a valve body, a circularvalve seat, a hub and supporting arms therefor, an aloutment, a valvedisk positioned between the abutment and hub, said hub being so POSI-tioned relatively to the valve seat that 15' the valve in its normalposition will be held under tension on its seat, and guiding means fordirectmg the flow to the valve outward DAVID A. DE CROW.

